.TH GROFF_MWWW @MAN7EXT@ "@MDATE@" "Groff Version @VERSION@"
.\" Copyright (C) 2000, 2001 Free Software Foundation, Inc.
.\"      Written by Gaius Mulley (gaius@glam.ac.uk)
.\"
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.\"
.\" user level guide to using the -mwww macroset
.\"
.do mso www.tmac
.\" we need the .LINKS here as we use it in the middle as an example
.\" once the user requests .LINKS then the automatic generation of links
.\" at the top of the document is suppresed.
.LINKS
.SH NAME
groff_mwww \- groff macros for authoring web pages
.LINE
.SH SYNOPSIS
.B "groff \-mwww"
[ options ]
file ...
.SH DESCRIPTION
This manual page describes the GNU \-mwww macros, which is part of the
groff document formatting system.
The manual page is very a basic guide, and the html device driver
.RB ( grohtml )
has been completely rewritten but still remains as in an alpha state.
It has been included into the distribution so that a lot of people have a
chance to test it.
Note that this macro file will be automatically called (via the
\fCtroffrc\fP file) if you use \fC-Thtml\fP.
.PP
To see the hyperlinks in action, please format this man page with the
.B grohtml
device.
.PP
Here is a summary of the functions found in this macro set.
.SH SYNPOSIS
.ta 2iL
\&.HTMLINDEX	determine automatic link cut off
.br
	point for sections/headers
.br
\&.BODYCOLOR	specify colours on a web page
.br
\&.BACKGROUND	specify background image
.br
\&.URL	create a url using two parameters
.br
\&.MAILTO	create a html email address
.br
\&.FTP	create an ftp reference
.br
\&.IMAGE	include an image file
.br
\&.HTML	pass an html raw request to the
.br
	device driver
.br
\&.TAG	generate an html name tag from $1
.br
.\"\&.CDFTP	optionally create two different links
.\".br
.\"	depending on hostname
.\".br
\&.LINE	create a full width horizontal rule
.br
.PP
Output of the
.IR pic ,
.IR eqn ,
.IR refer ,
and
.I tbl
preprocessors is acceptable as input.
.SH REQUESTS
.TP
.B HTMLINDEX
determines the cut off point for automatic link generation to headings.
By default all headings found in a troff document have links created to them
at the top of the html web page.
It maybe that many of the lower heading levels do not require links.
Alternatively some web pages may not need any heading links at all, in which
case:
.sp
.nf
\fC\&.HTMLINDEX 0\fP
.fi
.sp
will tell
.B grohtml
not to generate links.
An \fCHTMLINDEX\fP of 2 will mean that a heading
.sp
.B "1.1.1 Some Title"
.sp
will not be included in the links either as it is said to have a heading
level of three.
Another method for switching automatic headings is via the command line
switch \fC-P-l\fP.
.TP
.B BODYCOLOR
takes five parameters: foreground, background, active hypertext link,
hypertext link not yet visited, and visited hypertext link colour.
.TP
.B BACKGROUND
the only parameter to this macro is the background image file.
.TP
.B URL
generates
.TAG URL
a URL using either two or three arguments.
$1 is the name of the link, $2 is the actual URL, and $3 is optional stuff
to be printed immediately after $2.
Hyphenation is disabled while printing the actual URL; explicit breakpoints
should be inserted with the
.B \e:
escape.
Here is how to encode
.URL "homepage for groff" http://\:groff.\:ffii.\:org/ :
.sp
.nf
\s-2\fC\&.URL "homepage for groff" http://\e:groff.\e:ffii.\e:org/ :\fP\s+2
.fi
.sp
If this is processed by a device other than \fC-Thtml\fP
it appears as:
homepage for groff \(lahttp://groff.\:ffii.\:org\(ra.
The URL macro can be of any type; for example we can reference
.URL "Eric Raymond's pic guide" pic.html
by:
.sp
.nf
\s-2\fC\&.URL "Eric Raymond's pic guide" pic.html\fP\s+2
.fi
.sp
.TP
.B MAILTO
generates an email html reference.
The first argument is mandatory as the email address.
The optional second argument is the text you see in your browser, and
an optional third argument is stuff printed immediately after the
second argument.
Hyphenation is disabled while printing the actual email address.
For example, the groff maintainers are
.MAILTO wl@gnu.org "Werner Lemberg"
and
.MAILTO Ted.Harding@nessie.mcc.ac.uk "Ted Harding" .
This is achieved by the following macros:
.sp
.nf
\s-2\fC\&.MAILTO wl@gnu.org "Werner Lemberg"
\&.MAILTO Ted.Harding@nessie.mcc.ac.uk "Ted Harding" .\s+2\fP
.fi
.sp
Note that all the urls actually are treated as consuming no textual space
in groff.
This could be considered as a bug since it causes some problems.
To circumvent this, \fCwww.tmac\fP inserts a zero-width character which
expands to a harmless space (only if run with -Thtml).
.TP
.B FTP
indicates that data can be obtained via ftp.
The first argument is the browser text and the second is the url.
A third argument, similar to the macros above, is intended for stuff printed
immediately after the second argument.
The second and the third parameter are optional.
Hyphenation is disabled while printing the actual URL.
As an example, here the location of the
.FTP "current groff development distribution" \
ftp://ftp.ffii.org/\:pub/\:groff/\:devel/\:groff-current.tar.gz .
The macro example above was specified by:
.sp
.nf
\s-2\fC\&.FTP "current groff development distribution" \\
ftp://ftp.ffii.org/\e:pub/\e:groff/\e:devel/\e:groff-current.tar.gz .\fP\s+2
.fi
.sp
.TP
.B IMAGE
allows the document to include pictures.
The first argument is the image file.
The second optional argument gives the horizontal location;
.B l
puts the image to the left border,
.B r
to the right.
Any other value centers the image.
The next two arguments are optional also:
Argument three is the width in pixels (default is 400 pixels if absent).
The fourth argument is the height in pixels (default is the width value if
absent).
.sp
.TP
.B HTML
all text after this macro is treated as raw html.
If the document is processed \fIwithout\fP \fC-Thtml\fP then
the macro is ignored.
This macro is a building block for other higher level macros.
.sp
For example, the \fCBACKGROUND\fP macro is defined as:
.nf
\fC\&.de BACKGROUND
\&.   HTML <body background=\\$1>
\&..
\fP
.fi
.TP
.B TAG
generates an html name tag from its argument.
This can then be referenced using the
.URL URL #URL
macro.
As you can see, you must precede the tag name with `\fC#\fP' since it is
a local reference.
This link was achieved via placing a TAG in the URL description above;
the source looks like this:
.sp
.nf
\s-2\fC\&.TP
\&.B URL
generates
\&.TAG URL
a URL using either two or three
arguments.
$1 is the name of the link, $2 is the actual URL.\fP\s+2
.fi
.sp
.TP
.B LINE
generates a full width horizontal rule.
Example:
.sp
.nf
\fC\s-2\&.LINE\fP\s+2
.fi
.sp
.TP
.B LINKS
.TAG LINK
requests that grohtml place the automatically generated links at this position.
For example:
.LINKS
.SH
SECTION HEADING LINKS
.LP
By default
.B grohtml
generates links to all section headings and places these at the top of the
html document. (See
.URL LINKS #LINK
for details of how to switch this off or alter the position.
.SH
LIMITATIONS OF GROHTML
.LP
Tbl information is currently rendered as a png image.
.SH FILES
@MACRODIR@/mwww.tmac (a wrapper for www.tmac)
.br
@MACRODIR@/www.tmac
.SH "SEE ALSO"
.BR groff (@MAN1EXT@),
.BR @g@troff (@MAN1EXT@)
.BR grohtml (@MAN1EXT@),
.LP
.SH AUTHOR
.B Grohtml
was written by
.MAILTO gaius@glam.ac.uk "Gaius Mulley"
.SH BUGS
Report bugs to the
.MAILTO bug-groff@gnu.org "Groff Bug Mailing List" .
Include a complete, self-contained example that will allow the bug to be
reproduced, and say which version of groff you are using.
.
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